CA1296246C - Tire changer safety foot - Google Patents
Tire changer safety footInfo
- Publication number
- CA1296246C CA1296246C CA000556824A CA556824A CA1296246C CA 1296246 C CA1296246 C CA 1296246C CA 000556824 A CA000556824 A CA 000556824A CA 556824 A CA556824 A CA 556824A CA 1296246 C CA1296246 C CA 1296246C
- Authority
- CA
- Canada
- Prior art keywords
- tire
- mount
- demount
- rim
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
- B60C25/01—Apparatus or tools adapted for mounting, removing or inspecting tyres for removing tyres from or mounting tyres on wheels
- B60C25/05—Machines
- B60C25/132—Machines for removing and mounting tyres
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Control Of Combustion (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Safety apparatus for tire inflation operations on a tire changing machine having a tire inflation system. The machine has a support table for receiving a tire/rim assembly, and has a tower at one side of the machine which supports a tire mount-demount head on a vertical adjust arm in position over the support table. A foot is provided for mounting on the mount-demount head, in one embodiment, so that the foot may be placed above a tire/rim assembly being inflated to absorb explosive forces if the tire explodes from the rim due to over inflation or a faulty tire bead. In another embodiment the mount-demount head has an impact absorbing member adjustable in vertical position on the vertical adjust arm. The impact absorbing member extends therefrom to overlie a tire/rim assembly for the aforementioned purpose.
Safety apparatus for tire inflation operations on a tire changing machine having a tire inflation system. The machine has a support table for receiving a tire/rim assembly, and has a tower at one side of the machine which supports a tire mount-demount head on a vertical adjust arm in position over the support table. A foot is provided for mounting on the mount-demount head, in one embodiment, so that the foot may be placed above a tire/rim assembly being inflated to absorb explosive forces if the tire explodes from the rim due to over inflation or a faulty tire bead. In another embodiment the mount-demount head has an impact absorbing member adjustable in vertical position on the vertical adjust arm. The impact absorbing member extends therefrom to overlie a tire/rim assembly for the aforementioned purpose.
Description
~29~
TIP~E CHANGER SAFETY FOOT
SUMMARY_OF THE INVENTION
In accordance with an aspect of the invention, safety apparatus mounted on a tire changing machine having a tire inflating system, a table for receiving a rim/tire assembly to be inflated thereon, and having a tower at one side of the machine supporting a tire mount/demount head which is adjustable in height and lateral position to enable said head to be moved ~rom a tire mount/demount position to a position in engagement with said sa~ety apparatus during tire inflation, said safety apparatu~ comprises:
an impact member having means to receive the mount/demount head and disposed to overlie the surface of a rim on the rim/tire assembly receiving table in a safety position during tire inflation, and said impact member being removable to a remote out-of-the-way position during tire mount/demount operations.
In accordance with another aspect of the invention, in a tire changing machine having a supporting framework, a rim/tire assembly receiving table mounted on the upper portion of the ~ramework, a tire inflation system supported by the framework and the table, and a tower extending upwardly from one side of the framework, the tower having mounted thereon a mount/demount head which is adjustable in vertical and horizontal positions to enable said head to be moved from a tire mount/demount position to a position in engagement with a safety apparatus during tire inflation, said safety apparatus comprises:
an impact absorbing member having means to receive the mount/demount head, said impact absorbing member being disposable in a retention position immediately overlying the center of the table during tire inflation and said impact member being removable to a remote out-o~-the way position during tire mountldemount operations.
~L2~2~;
la BRIEF DESCRIPTION OF T~ E DRAWIN5S
Figure 1 is a perspective view of a tire changer utilizing the present invention~
Figure 2 is a perspective view of the safety foot depicted in Figure 1.
Figure 3 is a partial sectional view through the base of the tower on the tire changer.
Figure 4 is an electrical-pneumatic schematic of a portion of the tire changer in Figuxe 1.
~r 10 Figure 5 is a partial perspective view of a tire changer utilizing an alternative embodiment o the present invention.
Figure 6 is a perspective view of the impact member of the embodiment of Figure 5.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The invention disclosed herein will be described primarily in conjunction with a rotating table type tire changer for mounting and demounting tires onto and from vehicle wheel rims. The apparatus and method described herein is also useful on a tire changer having a stationary table for receiving the rim of a vehicle wheel. A tire changer of the fi /
/
,/
A
~2~62~
mentioned type is shown in Figure 1 having a base shown generally at 11 with a tower 12 mounted at one end of the base. The tower is disposed to rock about a tower piYot 10 into a position away from the base 11 to remove the mechanism supported by the tower from a position overlying the base. The tower is also able to be positioned as shown in Figure 1 where it assumes a substantially vertical position. An arm 13 is disposed to slide generally horizontally through an upper portion of the tower 12 to dispose a tire ~ount-demount head 14 (Fig. 2) in a position overlying the junction of a vehicle wheel rim and tire bead when the tower 12 is in the substantially vertical position~ A vertical adjust arm 16 is adjustable to place the mount-demount head in proper position relative to the tire bead and the wheel rim to mount or demount the tire therefrom as desired. The horizontal and vertical adjust arms 13 and 16 are capable of being locked in position by means of manual locking mechanisms actuated by locking handles 17 and 18. Actuation of the locking handles spaces the mount-demount head 14 appropriately from the vehicle rim to avoid damage to the rim durlng operation as is well known in this art.
The horizontal adjust arm 13 is longer than usual in the embodiment of Figure 1, so that the vertical adjust arm may be extended farther from the ~ower 12 for a purpose to be hereinafter described.
Rubber stops 19 and 20 are positioned on the horizontal adjust arm for the purpose of limiting the extension and retraction, respectively, of the horizontal adjust arm relative to the tvwer.
A foot pedal 21 is shown extending from the base 11 for actuation by an opera~or to provide pressurized air to a tire inflation system included in 6;~4~
the tire changing machine. The inflation system includes a tire inflation hose 22 having an air chuck 23 at the end thereof which is adapted to couple to air inflation valves on tires. The air inflation system may also include a bead seater ring (not shown) attached to a rotating table 26 on the tire changer, where the bead seater may be similar to that disclosed in U.S. Patent 3,805,871. The table is rotated by means of an electrical motor and interconnecting gearing ~not shown) which is known in this art and is supported within the base 11. The table in this type of tire changer has a number (in most cases 4) of moving jaws (also not shown) which are disposed to move radially in grooves 27 shown intercepting the edge of the table 26 to thereby clamp either the inside or the outside of a tire rim 24. The jaws on the tire changer are caused to move radially by actuation of two pneumatic cylinders 25 positioned beneath the table 26 and above the base ll which, through a system of simple levers, cause the jaws to undergo their aforedescribed radial movement. In this known manner, a tire 28 and rim 24 assembly is firmly positioned on top of the table 26. However, in a tire changer where the wheel and rim assembly is captured to prevent radial motion on the tire changer table, motion of the tire and wheel assembly, or parts thereof, axially away from the table is not restrained to any appreciable degree. Moreover, it is common to relax the grip exerted on the rim by the jaws during the process of inflating the tire on the rim while it rests on the support table 26 Therefore, if a tire mounted on the table is overinflated to the point of explosion, the tire rim assembly will move violently upward off of the table 26 endangering any persons situated in the near vicinity.
;X~-~3 The manner in which the violent movement of an exploding tire and rim assembly may be arrested on a tire changer involves, in one embodiment disclosed herein, extending the horizontal adjust arm 13 5 outwardly from the tower 12 until the axis of the vertical adjust arm 16 substantially overlies the rotational axis of the support table 26. An impact member 29, best seen in Figure 2, has a cavity 31 formed in the upper surface thereof. The cavity is configured to accept the mount-demount head 14 at the lower end of the vertical adjust arm 16. It m~y therefore be seen that the tire/rim assembly 28/24 may be placed on the support table 26 ~or inflation and the vertical adjust arm 16 moved upward to a position lS clearing the tire/rim assembly~ The impact member 29 is positioned so that it accepts the mount-demount head 14 within the cavity 31. The vertical adjust arm 16 may thereafter be lowered to thereby lower the impact member into contact with the upper surface of the rim 24. The vertical adjust arm is then locked in place with the handle 18.
Since the tower 12 of the tire changer of Figure l is conigured to rock about pivot lO
rearwardly away from the base 11 as hereinbefore described, the force of an exploding tire/rim assembly situated on support table 26 could pivot the tower 12 rearwardly allowing the exploding ~ire/rim assembly to acquire some momentum before being completely arrested by the impact member. To prevent this, a lock pin 32 which is secured to the base ll by means of a chain 33, is inserted through two aligned holes 34 in flanges 36 which extend upwardly- from the base ll.
The flanges serve primarily to support the pivot at the base of the tower 12 so that the tower may either be pivoted into the substantially vertical operating ~29~4~
position seen in Figure 1 or the inclined storage position rocked rearwardly away from the base 11. An aligned pair of holes 37 are also formed in the base of the tower 12. The holes 37 are positioned to align with the holes 34 when the tower 12 is in the vertical operating position. Therefore, in the position depicted in Figure 1 o the drawings the lock pin 32 may be inserted through all four holes to thereby prevent the tower 12 from being rocked rearwardly into the storage position. Consequently, the impact member 29 will be retained in contact with the rim during any explosion of a tire/rim assembly on the support table 26 and will absorb the forces of the explosion prior to allowing any substantial movement or momentum buildup in the tire/rim assembly.
Insertion of the lock pin 32 through the aligned holes 34 and 37 accomplishes a further objective. An electrical switch such as a microswitch having a roller-tipped switch actuating lever is shown at 38. The microswitch is mounted on a bracket 40 within the lower end of the tower 12 and is adjustable in position so that insertion of the lock pin 32 will cause the normally open switch contacts to close. The manner in which this is useful is shown in Figure 4.
An on-off electrical switch 39 for the tire changer provides power through a transformer 41 to a circuit including the microswitch 38 (normally open) and a solenoid actuated pneumatic valve 42~ The solenoid actuated valve is an enabling valve placed in the tire inflation air path defined by the tire inflation hose 22. The foot pedal 21 mentioned hereinbefore manually actuates a valve 43 also in the tire inflation air path. However, actuation of the foot pedal 21 alone will not provide tire inflation air through the hose 22 to the air chuck 23. ThUS, it may be seen that i2~
locking pin 32 must be inserted through the holes 34 and 37 to thereby actuate the microswitch 38 and the solenoid actuated pneumatic valve 42 to enable the tire inflation air path. Therea~ter, tire inflation air may be delivered to the air chuck 23 by actuation of the foot pedal whereupon it is available at a tire in~lation valve. Therefore, if it is deemed necessary to lock the tower in the vertical position to provide adequate safety, tire inflation cannot proceed until tower locking is accomplished.
An alternative embodiment of the disclosed invention is shown in Figure 5 where similar struc~ure has been assigned the same item numbers as in Figure 1. It will ~e noted that the lock pin 32 may be utilized in the embodiment of Figure 5 also. It is not necessary for the horizontal adjust arm 13 to have as great a degree of extension as described hereinbefore for the embodiment of Figure 1. The mount-demount head 14 is required, in this embodiment, to extend only to a position where it is normally required to be to mount and demount a tire 28 onto and off of a rim 24. A laterally extending rigid arm 46 is shown supported at one end by that portion o~ the vertical adjust arm 16 extending below the enclosure for the vertical adjust arm in Figure 5. The one end of the rigid arm 46 has an opening 47 formed therethrough which is configured in the same shape as the peripher~ of the vertical adjust arm 16. In this instance, the vertical adjust arm has a hexagonal periphery and the opening 47 has a hexagonal shape.
The rigid arm 46 is positioned on the vertical ad~ust arm to extend in a diametrical direction relative to a wheel rim on table 26 as shown in Figure 5. The rigid arm therefore assumes a position overlying support table 26 and any tire/rim assembly 2~/24 supported ~2~62~
thereon. It is probable that the length of the arm 46 should be such as to extend all the way across the diameter of the rim, although shor~er lengths would likely provide the safety feature sought.
The rigid arm 46 is disposed for axial movement along the vertical adjust arm 16 and may assume a safety position overlying the rim 24 or a remote out-of-the-way position shown in phantom lines in Figure 5. As seen in Figure 6, a ring 48 is attached to the top of the rigid arm 46 by an eye 49.
The rigid arm is held in the remote or stowed position of Figure 5 by placing the ring over a hook 51 (Fig.
5) fixed on the housing for the vertical adjust arm.
It may be seen that the impact of an exploding tire/rim assembly being inflated while on the support table 26 is absorbed by the impact member formed by the rigid arm 46 when it is released from its storage position and positioned as seen in solid lines in Figure 5~ Force from an exploding tire will not move the arm 46 upward on the vertical adjust arm 16, because the arm 46 will tend to rotate about a diameter across the opening 47 due to the moment created in by the explosive force. The moment will cause high friction levels between the rigid and vertical adjust arms at the opening 47 and little or no movement will take place. The use of the locking pin 32 as described in the embodiment of Figure 1 will further stabilize the rigid arm in position to absorb impact from tire explosion.
Although the best mode contemplated for carrying out the present invention has been herein shown and described, it will be apparent that modification and variation may be made without department from what may be regarded to be the subject matter of the invention.
HMS:smb
TIP~E CHANGER SAFETY FOOT
SUMMARY_OF THE INVENTION
In accordance with an aspect of the invention, safety apparatus mounted on a tire changing machine having a tire inflating system, a table for receiving a rim/tire assembly to be inflated thereon, and having a tower at one side of the machine supporting a tire mount/demount head which is adjustable in height and lateral position to enable said head to be moved ~rom a tire mount/demount position to a position in engagement with said sa~ety apparatus during tire inflation, said safety apparatu~ comprises:
an impact member having means to receive the mount/demount head and disposed to overlie the surface of a rim on the rim/tire assembly receiving table in a safety position during tire inflation, and said impact member being removable to a remote out-of-the-way position during tire mount/demount operations.
In accordance with another aspect of the invention, in a tire changing machine having a supporting framework, a rim/tire assembly receiving table mounted on the upper portion of the ~ramework, a tire inflation system supported by the framework and the table, and a tower extending upwardly from one side of the framework, the tower having mounted thereon a mount/demount head which is adjustable in vertical and horizontal positions to enable said head to be moved from a tire mount/demount position to a position in engagement with a safety apparatus during tire inflation, said safety apparatus comprises:
an impact absorbing member having means to receive the mount/demount head, said impact absorbing member being disposable in a retention position immediately overlying the center of the table during tire inflation and said impact member being removable to a remote out-o~-the way position during tire mountldemount operations.
~L2~2~;
la BRIEF DESCRIPTION OF T~ E DRAWIN5S
Figure 1 is a perspective view of a tire changer utilizing the present invention~
Figure 2 is a perspective view of the safety foot depicted in Figure 1.
Figure 3 is a partial sectional view through the base of the tower on the tire changer.
Figure 4 is an electrical-pneumatic schematic of a portion of the tire changer in Figuxe 1.
~r 10 Figure 5 is a partial perspective view of a tire changer utilizing an alternative embodiment o the present invention.
Figure 6 is a perspective view of the impact member of the embodiment of Figure 5.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The invention disclosed herein will be described primarily in conjunction with a rotating table type tire changer for mounting and demounting tires onto and from vehicle wheel rims. The apparatus and method described herein is also useful on a tire changer having a stationary table for receiving the rim of a vehicle wheel. A tire changer of the fi /
/
,/
A
~2~62~
mentioned type is shown in Figure 1 having a base shown generally at 11 with a tower 12 mounted at one end of the base. The tower is disposed to rock about a tower piYot 10 into a position away from the base 11 to remove the mechanism supported by the tower from a position overlying the base. The tower is also able to be positioned as shown in Figure 1 where it assumes a substantially vertical position. An arm 13 is disposed to slide generally horizontally through an upper portion of the tower 12 to dispose a tire ~ount-demount head 14 (Fig. 2) in a position overlying the junction of a vehicle wheel rim and tire bead when the tower 12 is in the substantially vertical position~ A vertical adjust arm 16 is adjustable to place the mount-demount head in proper position relative to the tire bead and the wheel rim to mount or demount the tire therefrom as desired. The horizontal and vertical adjust arms 13 and 16 are capable of being locked in position by means of manual locking mechanisms actuated by locking handles 17 and 18. Actuation of the locking handles spaces the mount-demount head 14 appropriately from the vehicle rim to avoid damage to the rim durlng operation as is well known in this art.
The horizontal adjust arm 13 is longer than usual in the embodiment of Figure 1, so that the vertical adjust arm may be extended farther from the ~ower 12 for a purpose to be hereinafter described.
Rubber stops 19 and 20 are positioned on the horizontal adjust arm for the purpose of limiting the extension and retraction, respectively, of the horizontal adjust arm relative to the tvwer.
A foot pedal 21 is shown extending from the base 11 for actuation by an opera~or to provide pressurized air to a tire inflation system included in 6;~4~
the tire changing machine. The inflation system includes a tire inflation hose 22 having an air chuck 23 at the end thereof which is adapted to couple to air inflation valves on tires. The air inflation system may also include a bead seater ring (not shown) attached to a rotating table 26 on the tire changer, where the bead seater may be similar to that disclosed in U.S. Patent 3,805,871. The table is rotated by means of an electrical motor and interconnecting gearing ~not shown) which is known in this art and is supported within the base 11. The table in this type of tire changer has a number (in most cases 4) of moving jaws (also not shown) which are disposed to move radially in grooves 27 shown intercepting the edge of the table 26 to thereby clamp either the inside or the outside of a tire rim 24. The jaws on the tire changer are caused to move radially by actuation of two pneumatic cylinders 25 positioned beneath the table 26 and above the base ll which, through a system of simple levers, cause the jaws to undergo their aforedescribed radial movement. In this known manner, a tire 28 and rim 24 assembly is firmly positioned on top of the table 26. However, in a tire changer where the wheel and rim assembly is captured to prevent radial motion on the tire changer table, motion of the tire and wheel assembly, or parts thereof, axially away from the table is not restrained to any appreciable degree. Moreover, it is common to relax the grip exerted on the rim by the jaws during the process of inflating the tire on the rim while it rests on the support table 26 Therefore, if a tire mounted on the table is overinflated to the point of explosion, the tire rim assembly will move violently upward off of the table 26 endangering any persons situated in the near vicinity.
;X~-~3 The manner in which the violent movement of an exploding tire and rim assembly may be arrested on a tire changer involves, in one embodiment disclosed herein, extending the horizontal adjust arm 13 5 outwardly from the tower 12 until the axis of the vertical adjust arm 16 substantially overlies the rotational axis of the support table 26. An impact member 29, best seen in Figure 2, has a cavity 31 formed in the upper surface thereof. The cavity is configured to accept the mount-demount head 14 at the lower end of the vertical adjust arm 16. It m~y therefore be seen that the tire/rim assembly 28/24 may be placed on the support table 26 ~or inflation and the vertical adjust arm 16 moved upward to a position lS clearing the tire/rim assembly~ The impact member 29 is positioned so that it accepts the mount-demount head 14 within the cavity 31. The vertical adjust arm 16 may thereafter be lowered to thereby lower the impact member into contact with the upper surface of the rim 24. The vertical adjust arm is then locked in place with the handle 18.
Since the tower 12 of the tire changer of Figure l is conigured to rock about pivot lO
rearwardly away from the base 11 as hereinbefore described, the force of an exploding tire/rim assembly situated on support table 26 could pivot the tower 12 rearwardly allowing the exploding ~ire/rim assembly to acquire some momentum before being completely arrested by the impact member. To prevent this, a lock pin 32 which is secured to the base ll by means of a chain 33, is inserted through two aligned holes 34 in flanges 36 which extend upwardly- from the base ll.
The flanges serve primarily to support the pivot at the base of the tower 12 so that the tower may either be pivoted into the substantially vertical operating ~29~4~
position seen in Figure 1 or the inclined storage position rocked rearwardly away from the base 11. An aligned pair of holes 37 are also formed in the base of the tower 12. The holes 37 are positioned to align with the holes 34 when the tower 12 is in the vertical operating position. Therefore, in the position depicted in Figure 1 o the drawings the lock pin 32 may be inserted through all four holes to thereby prevent the tower 12 from being rocked rearwardly into the storage position. Consequently, the impact member 29 will be retained in contact with the rim during any explosion of a tire/rim assembly on the support table 26 and will absorb the forces of the explosion prior to allowing any substantial movement or momentum buildup in the tire/rim assembly.
Insertion of the lock pin 32 through the aligned holes 34 and 37 accomplishes a further objective. An electrical switch such as a microswitch having a roller-tipped switch actuating lever is shown at 38. The microswitch is mounted on a bracket 40 within the lower end of the tower 12 and is adjustable in position so that insertion of the lock pin 32 will cause the normally open switch contacts to close. The manner in which this is useful is shown in Figure 4.
An on-off electrical switch 39 for the tire changer provides power through a transformer 41 to a circuit including the microswitch 38 (normally open) and a solenoid actuated pneumatic valve 42~ The solenoid actuated valve is an enabling valve placed in the tire inflation air path defined by the tire inflation hose 22. The foot pedal 21 mentioned hereinbefore manually actuates a valve 43 also in the tire inflation air path. However, actuation of the foot pedal 21 alone will not provide tire inflation air through the hose 22 to the air chuck 23. ThUS, it may be seen that i2~
locking pin 32 must be inserted through the holes 34 and 37 to thereby actuate the microswitch 38 and the solenoid actuated pneumatic valve 42 to enable the tire inflation air path. Therea~ter, tire inflation air may be delivered to the air chuck 23 by actuation of the foot pedal whereupon it is available at a tire in~lation valve. Therefore, if it is deemed necessary to lock the tower in the vertical position to provide adequate safety, tire inflation cannot proceed until tower locking is accomplished.
An alternative embodiment of the disclosed invention is shown in Figure 5 where similar struc~ure has been assigned the same item numbers as in Figure 1. It will ~e noted that the lock pin 32 may be utilized in the embodiment of Figure 5 also. It is not necessary for the horizontal adjust arm 13 to have as great a degree of extension as described hereinbefore for the embodiment of Figure 1. The mount-demount head 14 is required, in this embodiment, to extend only to a position where it is normally required to be to mount and demount a tire 28 onto and off of a rim 24. A laterally extending rigid arm 46 is shown supported at one end by that portion o~ the vertical adjust arm 16 extending below the enclosure for the vertical adjust arm in Figure 5. The one end of the rigid arm 46 has an opening 47 formed therethrough which is configured in the same shape as the peripher~ of the vertical adjust arm 16. In this instance, the vertical adjust arm has a hexagonal periphery and the opening 47 has a hexagonal shape.
The rigid arm 46 is positioned on the vertical ad~ust arm to extend in a diametrical direction relative to a wheel rim on table 26 as shown in Figure 5. The rigid arm therefore assumes a position overlying support table 26 and any tire/rim assembly 2~/24 supported ~2~62~
thereon. It is probable that the length of the arm 46 should be such as to extend all the way across the diameter of the rim, although shor~er lengths would likely provide the safety feature sought.
The rigid arm 46 is disposed for axial movement along the vertical adjust arm 16 and may assume a safety position overlying the rim 24 or a remote out-of-the-way position shown in phantom lines in Figure 5. As seen in Figure 6, a ring 48 is attached to the top of the rigid arm 46 by an eye 49.
The rigid arm is held in the remote or stowed position of Figure 5 by placing the ring over a hook 51 (Fig.
5) fixed on the housing for the vertical adjust arm.
It may be seen that the impact of an exploding tire/rim assembly being inflated while on the support table 26 is absorbed by the impact member formed by the rigid arm 46 when it is released from its storage position and positioned as seen in solid lines in Figure 5~ Force from an exploding tire will not move the arm 46 upward on the vertical adjust arm 16, because the arm 46 will tend to rotate about a diameter across the opening 47 due to the moment created in by the explosive force. The moment will cause high friction levels between the rigid and vertical adjust arms at the opening 47 and little or no movement will take place. The use of the locking pin 32 as described in the embodiment of Figure 1 will further stabilize the rigid arm in position to absorb impact from tire explosion.
Although the best mode contemplated for carrying out the present invention has been herein shown and described, it will be apparent that modification and variation may be made without department from what may be regarded to be the subject matter of the invention.
HMS:smb
Claims (8)
1. Safety apparatus mounted on a tire changing machine having a tire inflating system, a table for receiving a rim/tire assembly to be inflated thereon, and having a tower at one side of the machine supporting a tire mount/demount head which is adjustable in height and lateral position to enable said head to be moved from a tire mount/demount position to a position in engagement with said safety apparatus during tire inflation, said safety apparatus comprising an impact member having means to receive the mount/demount head and disposed to overlie the surface of a rim on the rim/tire assembly receiving table in a safety position during tire inflation, and said impact member being removable to a remote out-of-the-way position during tire mount/demount operations.
2. Safety apparatus as in claim 1 comprising means for extending the lateral position adjustment of the mount/demount head, and wherein said impact member comprises a foot for positioning substantially over the centerline of the rim/tire assembly, said foot having a cavity forming said receiving means in the upper side thereof which is adapted to receive the mount/demount head.
3. Safety apparatus as in claim 1 wherein the tower is pivotable between an upright operating position and an out-of-the-way position, comprising releasable lock means movable between an engaged position and a released position for retaining the tower in the upright operating position when said lock means is in the engaged position.
4. Safety apparatus as in claim 3 wherein the inflation system includes a tire inflating air path, comprising an enabling valve actuated by said lock means in said engaged position to thereby enable the tire inflating air path.
5. In a tire changing machine having a supporting framework, a rim/tire assembly receiving table mounted on the upper portion of the framework, a tire inflation system supported by the framework and the table, and a tower extending upwardly from one side of the framework, the tower having mounted thereon a mount/demount head which is adjustable in vertical and horizontal positions to enable said head to be moved from a tire mount/demount position to a position in engagement with a safety apparatus during tire inflation, said safety apparatus comprising:
an impact absorbing member having means to receive the mount/demount head, said impact absorbing member being disposable in a retention position immediately overlying the center of the table during tire inflation and said impact member being removable to a remote out-of-the-way position during tire mount/demount operations.
an impact absorbing member having means to receive the mount/demount head, said impact absorbing member being disposable in a retention position immediately overlying the center of the table during tire inflation and said impact member being removable to a remote out-of-the-way position during tire mount/demount operations.
6. A tire changing machine as in claim 5 comprising means for extending the horizontal position adjustment of the mount/demount head, and wherein said impact absorbing member comprises a foot for positioning substantially over the centerline of the rim/tire assembly, said foot having a cavity forming said receiving means in the upper side thereof which is adapted to receive the mount/demount head.
7. A tire changing machine as in claim 5 wherein the tower is pivotable from an upright operating position into an out-of-the-way position, further comprising releasable lock means movable between an engaged position and a released position for retaining the tower in the upright operating position when said lock means is in the engaged position.
8. A tire changing machine as in claim 7 wherein said inflation system includes a tire inflating air path comprising an enabling valve actuated by said lock means in said engaged position to thereby enable the tire inflating air path.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/010,030 US4765387A (en) | 1987-02-02 | 1987-02-02 | Tire changer safety foot |
| US07/010,030 | 1987-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1296246C true CA1296246C (en) | 1992-02-25 |
Family
ID=21743431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000556824A Expired - Lifetime CA1296246C (en) | 1987-02-02 | 1988-01-19 | Tire changer safety foot |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4765387A (en) |
| JP (1) | JPS63195008A (en) |
| CA (1) | CA1296246C (en) |
| DE (1) | DE3801838A1 (en) |
| FR (1) | FR2610251B1 (en) |
| IT (1) | IT1224618B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1002584A6 (en) * | 1988-11-08 | 1991-04-02 | Quesne Francis Du | DEVICE FOR ADJUSTING THE TOOL OF AN AUTOMOBILE TIRE MOUNTING AND DEMOUNTING APPARATUS. |
| JP2564057B2 (en) * | 1991-08-27 | 1996-12-18 | 株式会社ブリヂストン | Method and device for filling internal pressure of tire rim assembly |
| US5623981A (en) * | 1995-08-17 | 1997-04-29 | Service Station Products Company | Safety barrier for rim holding tire changers |
| TW343179B (en) † | 1995-10-02 | 1998-10-21 | Maciss R L | Burst protection device for tire removing machines a burst protection device for tire removing machines of the type having a platform on which a wheel can be located and an arm supporting a bead extractor. |
| IT1287640B1 (en) * | 1996-05-03 | 1998-08-06 | Corghi Spa | MACHINE FOR THE ASSEMBLY AND DISASSEMBLY OF TIRES ON AND FROM THE RESPECTIVE RIMS |
| US5971053A (en) * | 1997-07-14 | 1999-10-26 | Snap-On Technologies, Inc. | Safety restraint and barrier for use with tire servicing equipment |
| US5941294A (en) * | 1998-02-19 | 1999-08-24 | Hennessy Industries, Inc. | Rim holding tire changers mount/dismount head connect structure |
| US6213195B1 (en) | 1998-12-23 | 2001-04-10 | Hamilton Sundstrand Corporation | Modular coolant manifold for use with power electronics devices having integrated coolers |
| ITVR20010095A1 (en) * | 2001-09-04 | 2003-03-04 | Butler Eng & Marketing | SAFETY DEVICE TO PRESSURIZE AN ENVELOPE AT THE REQUEST OF COMBUSTION. |
| US7044188B2 (en) * | 2003-06-12 | 2006-05-16 | Dürr Systems, Inc. | Apparatus for mounting and inflating a tire and wheel assembly |
| JP2010260500A (en) * | 2009-05-11 | 2010-11-18 | Onodani Kiko Kk | Tool mounting structure and tire attaching/detaching device |
| US8531822B2 (en) | 2011-07-29 | 2013-09-10 | Hamilton Sundstrand Corporation | Cooling and controlling electronics |
| ITMO20130274A1 (en) * | 2013-09-30 | 2015-03-31 | Sicam Srl | TANK MACHINE |
| CN104400011B (en) * | 2014-12-01 | 2017-05-17 | 太仓市高泰机械有限公司 | Righting device for inner contour of rim |
| CN104760477B (en) * | 2015-04-03 | 2017-11-17 | 杨钰婷 | A kind of vehicle-mounted job type tire changer |
| CN110406333A (en) * | 2019-08-22 | 2019-11-05 | 苏州晨创智能科技有限公司 | It blows out the mechanism for assembling-disassembling of emergency safety device |
| CN113183691B (en) * | 2021-04-25 | 2022-06-03 | 长春汽车工业高等专科学校 | Portable automobile tire fast loading and unloading equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1110037B (en) * | 1956-09-08 | 1961-06-29 | Polyprodukte A G | Device for mounting and removing tires from motor vehicles |
| US3552469A (en) * | 1969-02-19 | 1971-01-05 | Lee M Corless | Tire bead seater |
| BE788623A (en) * | 1970-08-24 | 1973-01-02 | Philipp Reinheimer Ohg Fa | DEVICE FOR FILLING AIR BANDAGES WITHOUT AIR CHAMBERS FOR VEHICLES |
| US3677320A (en) * | 1970-10-12 | 1972-07-18 | B & J Mfg Co | Tire bead seating and inflation apparatus and method for using same |
| US4263958A (en) * | 1970-11-16 | 1981-04-28 | B & J Manufacturing Company | Tire mounting, bead seating and inflation apparatus and method of use |
| US3805871A (en) * | 1970-11-16 | 1974-04-23 | B & J Mfg Co | Tire mounting, bead seating and inflation apparatus and method of use |
| US3675705A (en) * | 1970-11-16 | 1972-07-11 | B & J Mfg Co | Tire bead seating and inflation apparatus |
| CH527073A (en) * | 1971-03-01 | 1972-08-31 | Fibotema Ag | Pneumatic machine |
| US3700021A (en) * | 1971-03-08 | 1972-10-24 | Coats Co Inc The | Tire servicing and inflating apparatus |
| US3785424A (en) * | 1971-08-02 | 1974-01-15 | Royal Industries | Tire bead seater |
| US3937264A (en) * | 1972-03-03 | 1976-02-10 | The Coats Company, Inc. | Bead seating and inflation apparatus for a tire changing stand |
| US3911989A (en) * | 1974-07-24 | 1975-10-14 | William Vandenburg | Tire changer |
| GB1524514A (en) * | 1975-10-16 | 1978-09-13 | Waudby D | Tyre inflation apparatus |
| US4057093A (en) * | 1977-02-09 | 1977-11-08 | Joines John S | Protective apparatus for mounting tires |
| CA1117858A (en) * | 1978-01-23 | 1982-02-09 | Leslie Bubik | Tire-changing apparatus with bead breaker mechanism |
| US4393914A (en) * | 1981-05-22 | 1983-07-19 | Hennessy Industries, Inc. | Tire changer with combination wheel clamps and bead looseners |
| US4529024A (en) * | 1983-12-29 | 1985-07-16 | Fmc Corporation | Tire changer accessory for use with custom alloy rims |
| US4742859A (en) * | 1986-12-05 | 1988-05-10 | Fmc Corporation | Tire changer safety apparatus and method |
-
1987
- 1987-02-02 US US07/010,030 patent/US4765387A/en not_active Expired - Fee Related
-
1988
- 1988-01-19 CA CA000556824A patent/CA1296246C/en not_active Expired - Lifetime
- 1988-01-22 DE DE3801838A patent/DE3801838A1/en active Granted
- 1988-01-26 JP JP63013754A patent/JPS63195008A/en active Pending
- 1988-01-28 FR FR888800993A patent/FR2610251B1/en not_active Expired - Lifetime
- 1988-02-02 IT IT8819282A patent/IT1224618B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8819282A0 (en) | 1988-02-02 |
| DE3801838A1 (en) | 1988-08-11 |
| FR2610251B1 (en) | 1990-07-20 |
| DE3801838C2 (en) | 1992-02-20 |
| FR2610251A1 (en) | 1988-08-05 |
| JPS63195008A (en) | 1988-08-12 |
| US4765387A (en) | 1988-08-23 |
| IT1224618B (en) | 1990-10-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |